(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "The manufacture and properties of iron and steel"

INFLUENCE OP CERTAIN ELEMENTS ON STEEL.
365
la 1903 a pamphlet was issued on nickel steel, by A. L. Colby. His conclusions may be thus summarized: Three per cent,  of nickel in steel of 0.25  per cent,  carbon
TABLE XVII-L. Nickel Steel as Compared with Carbon Steel.
NOTE.—All steels were made in an acid open-hearth furnace by The Pennsylvania
Steel Company.
Kind of steel.	Composition; percent.								
	C.		Mn.		P.                      S.				NI.
Nickel           . .	.24 .80 to .85 .25 to .80		0.78 .60 to 1.00 .60 to   .80		.032                      .027 .03 to .05           .08 to .05 .03 to .06           .03 to .07				8.25 nil. nil.
Hard forging . . Forging     ....									
Shape of member.		Kind of steel.		Ultimate strength; pounds per square inch.	Elastic limit; pounds per square inch.	Elastic ratio; per cent.	Elongation In 8 inches ; per cent.	Elongation in 2 inches ; per cent.	Reduction of area; per cent.
Bounds,		Nickel . .		86015 87668 78066	63575 58055 61793	73.9 66.2 66.8	20.19 16.70 23.94	84.00 24.44	46.3 80.3 52.0
		Hard forging . Forging ....							
Angles,		Nickel . .		86960 87820 70970	58558 64153 49544	67.8 61.7 • 64.4	21.75 19.25	89.67 84.83	60.5 43.3 49.6
		Hard forging . Forging ....							
									
Universal plates, longitudinal,		Nickel . .		85773 82778 78996	58410 50163 46654	68.1 60.6 5'J.l	21.08 20.50 26.78	89.25 87.67	62.0 47.0 52.1
		Hard forging . Forging .-. . .							
Universal plates, transverse,		Nickel . .		86417 85178	58203 (50000)*	67.4 (58.7)*	16.50 18.83	28.92 28.17	86.1 27.4
		Hard forging .							
									
Sheared plates, longitudinal,		Nickel . .		85887 85012 78918	58169 (50000)* 49128	68.2 (58.8)* 62.3	19.00 22.10 22.03	85.60 89.40	48.8 48.4 60.8 43.4 41.8
		Hard forging . Forging ....							
Sheared plates, '  transverse,		Nickel. .		84877 84827	67260 (50000)*	67.9 (59.3)*	17.13 21.71	82.60 87.00	
		Hard forging , Forging , . . ,							
produces a metal as strong as simple carbon steel of 0.45 per cent, carbon, but with the ductility of the lower carbon steel.
On low-carbon steels not annealed, each 1 per cent, of nickel up to 5 per cent, causes an increase of 5000 pounds in the elastic limit and 4000 pounds in the ultimate strength, high-carbon steels showing more gain than soft steel, the higher elastic limit giving more working capacity. __________         '__________________
* Approximate; could not determine accurately.